For the U.S., Kerry is to sign the agreement Friday and then President Obama will ratify it before he leaves office in December, a senior U.S. official told CBS News in a conference call this week.
Time Frame. The average dolphin species can stay underwater for as long as eight to 10 minutes; some can remain submerged while holding their breath for 15 minutes. Dolphins breathe through their blowhole, which has a muscular flap that covers it when they go under water, keeping water out of their lungs. Size.
Usually they can hold their breath from 4 - 15 minutes but can remain underwater for two hours if needed and if they arenât stressed. The record time spent underwater is eight hours in freezing conditions; this is because a cold crocodile uses less energy and oxygen so it can hold its breath longer than a warm one.